Grass trimmer



Feb. 13, 1923. J. 0. JONES ET AL.

GRASS TRIMMER.

FILED MAR. 5, 192!- 3 SHEETSw-SHEET 1.

IZWEZ Z'ORS Feb. 13; 1923. 1,445,515. J. C. JONES ET AL.

GRASSIRIMMER.

FILED MAR. 55, 1921.

3 SHEETS-SHEET 2 zzwrwmzs Jmes C. ames Feb. 13, 1923.

J. c. JONES ET AL. GRASS TRIMMER 3 SHE FILED MAR-5,1921.

Patented Feb. 13, 1923.

Jar/ins 0. onas .snn nnonr c. nannies EB, 05 PHILADELPHIA, PENNSYLVANIA.

ennss martini/inn.

Application filed March 5,

I To all whom it may concern Be .it known that we, JAi ns C. Jones andAnonr C. .KREUTZER, citizens of the United States, residing atPhiladelphia, in the county of Philadelphia. and State of Pennsylvania,have invented new and useful improvements in Grass Trimmers, of whlchthe following. is a specification.

Our invention relates to new and useful improvements in grass trimmers,and has for its object to provide a device of this character forattachment to lawn mower of ordinary construction, whereby it will beactuated by the said lawn mower and so arranged as to be easilydetachable therefrom.

Another object of the invention is to provide a stationary serratedcutter bar which when in place is located adjacent and to one side ofone of the lawn mower driving wheels and with which cooperates a.reciproeating serrated cutter or blade, the latter receiving its motionthrough suitable power and motion transmitting means coacting with oneof the driving wheels.

A further object of the invention is to provide means for attachment tothe frame of a lawn mower and adapted to remainthereon whereby the grasstrimmer may be readily placed on or removed from the lawn mower.

With these ends in view, this invention consists in the details ofconstruction and combination of elements hereinafter set forth and thenspecifically designated by the claims.

In order that those skilled in the art to.

which this invention appertains, may understand how to make and use thesame, we will describe its construction in detail referring by numeralsto the accompanying drawings forming a partof this application. 1 inwhich Fig. 1., fragmentary plan view of a lawn mower showing my grasstrimmer tached thereto.

F ig. 2, is a side elevation thereof.

Fig. 3, is a similar view illustrating-a slightly different driving oractuating means.

Fig. l, is a face view of the supporting and operating lever of thecutting blade.

Fig. 5, is edge view thereof.

Fig. 6, is a face view of the cutter bar upport 1921. Serial No.450,082.

.F 7, is an edge view thereof.

Fig. 8. is a lower end view of the operatmg crank or cam and its shaft.

F g. 9, is a side elevation thereof.

Fig. 10, is a front elevation of the complete grass trimmer detached andshowing the attaching socket connected therewith. l

Fig. 11, is an outer edge view or side elevation of the trimmer frame.

F g. 12, is a front elevation thereof.

31g. 18, is an inner edge view or side elevatlon thereof.

Fig. 14, is a plan view of said frame; and

Fig. l5,'is a perspective view of the attaching socket. Q

In carrying out our invention as here embodied, particular referencebeing had to lhgs. l and 2, the numeral 2 represents a lawn mower of anyordinary or well known construction and including a tractor or drivingwheel 3, the outer surface or circumference of which is preferablycorrugated or roughened, a frame at and a balancing or supporting roller5. i

11 some suitable part of the mower frame l is detachably and adjustablymounted the attaching; socket 6 having a slot 7 for registration with apart ofthe mower frame and provided with a chann l 8 forn'ied bv thespaced flanges 9 into which its a suitable part of the trimmer to behereinafter described. A set screw 10 or its equivalent is threadedthrough the body of the attaching; socket in the region of the slot 7 soas to project into said slot and impinge against that portion of themower frame lying within the slot and thereby detachably andadjustably-fasten said attaching socket'to the mower frame. A set screw11 or its equivalent is threaded through the body of the attachingsocketin the region of the Cl1l11- nel 8 and projects into said channel fordetachably fastening the trimmer frame to the attaching socket as willbe hereinafter explained.

The frame 12 of the trimmer consists of an upright 18 having a bearing14; at its upper end and integral spaced parallel bearing brackets 15and 16 projecting outwardly intermediate the ends of said upright, oneof said brackets being located adjacent the upper end of the upright andthe other'adjacent its lower enc. Below the lower bracket 16 and formedintegral with the upright is a foot 17 having a recess 18 therein. intothe bearing brackets 15 and 16. lower end of the shaft 33 15 secured acam which projects a set screw 19 or its equivalent, said screw beingthreaded into the underside of said foot. From the inner face of theupright projects a lug 20 with which is formed a downwardly projectinglinger 21 for registration with the channel 8 in the attaching socket 6and an upwardly projecting extension 22 provided with a bearing 23. Thefinger 21 and its extension 22 are spaced from and parallel with theupright 13 and with said finger is formed a forwardly and upwardlyprojecting arm 24 having a hole 25 at its outer end.

In. the hole 25 is mounted or titted a sta tionary axle 26 on which isrevolubly journailed a wheel 27 the surface thereof preferably beingcorrugated or roughened and this wheel coacts with one of the wheels ofthe mower when the trimmer is in place thereon and is revolved by themower wheel.

Connected with the wheel 27 is a gear 28 meshing with a pinion 29secured on the shaft 30, the latter'being journalled in the bearings 14and 23 and on said shaft is also secured a beveled gear 31 meshing witha beveled gear 32 secured to the upper end of the vertical shaft 33which is journalled in On the yoke 34 between the arms of which ismounted an axle 35 having a cam roller 36 journailed thereon.

The reference numeral 37 denotes the cut for bar support comprisimr ashank 38 for insertion in the recess 18 where it is securely held, afteradjustment, by the set screw 19 and'a head 39 recessed in the upper faceas at 40 for the reception of the cutter bar 41. This head is providedwith a hole 42 and with a slot 43 in the recessed portion.

The cutter bar 41 is provided with forwardly extending fingers 44 whichact as the fixed cutting element and is provided with a series ofperforations 45 whereby the cutter bar may be adjusted within certainlimits and should the adjustment thus attainable be insuflicient the barmay be further adjusted within the limits of the slot 43, it beingunderstood that suitable fastening means such as a screw 46 is'employedto attach the cutter bar to its support, said fastening means passingthrough any one of the perforations and the slot with a nut 47 threadedthereon.

On the cutter bar support 37 is pivoted a cutting blade operating lever48 by means of a bolt 49 or its equivalent passing through a hole 50therein and through the hole 42 in the head of the cutter bar support,said bolt having a nut 51 screwed thereon.

The cutting blade lever 48 includes a shank 52 with a head 53 at one endrecessed in its lower face as at 54 with a slot 55 in the recessedportion, the opposite end of the shank being blfurcated as representedby the numeral 56 so as to partially surround the yoke 34 and its camroller 36 and be acted upon by said roller to oscillate the cuttingblade operating lever.

A. suitable serrated cutting blade 57 provided with a series ofperforations 58 is ad justably attached to the cutting blade lever bymeans of a screw 59 passing through any one of said perforations and theslot 55 in the head of the cutting blade lever 48 with a nut 60 screwedthereon. The perforations 58 and slot 55 permit the cutting blade 5? tobe adjusted relative to the operating lever 48 in the same manner as thecutting bar is adjusted. relative to its support. a

' In practice the lawn mower is used in the ordinary manner for cuttingthe grass but as is well known the grass growing close to walls,buildings, fences and hedges or other plants cannot be cut with a lawnmower of ordinary construction making necessary to afterwards trim theuncut portions with a sickle or shears which is slow, tedious andtiring. These are disadvantages which are overcome by my improvedtrimmer, the latter being readily attached to the lawn mower byinserting the finger 21 in the attaching socket norinallyremaining inplace on the lawn mower. When the trimmer has been attached to the lawnmower, said trimmer projects to one side of the mower beyond the wheelthereof and therefore can be guided along the fence, hedge or otherobjectto trim the grass which was uncut by the mower. This makesitunnecessary for the person cutting the grass to use shears or otherinstruments and, relieves the person of the necessity of stoopinp; orkneeling upon the ground. As the lawn mower is mover over the ground themotion will be'transmitted to the wheel 27 and from it to the cam yokeand its roller through the train of gearing which will. oscillate thecutting blade over the cutter bar and thus accomplish the cutting ortrimming operations.

In Fig. 3 we have shown a slightly different means of transmittingmotion to the cuttingblade which is especially adapted for use with lawnmowers having a long frame making it necessary to mount the trimmer agreater distance from the mower wheel than in the form shownin Figs, 1and 2. In this ease a sprocket wheel 61 is journall d on the axle 26 andconnected with the wheel 27 while a smaller sprocketwheel 62 is securedto the shaft 30 in lieu of the pinion 29 and motion is transmitted from.the sprocket wheel 61 to the sprocket wheel 62 by means of a chain 63passing about said sprocket The rest of the construction is i shown asthese may be varied within the limits of tne appended claims withoutdeparting from the spirit of our invention.

Having thus, fully described our invention, what we claim as new anduseful is 1- l. A grass trimmer comprising in comhinzition with it lawnmower, an attaching socket detachuhly and adj ustshly secured to thelawn mower "frame, a. trininier trains detnchably connected with thentteching socket, a vertical shatlt journalled in the frame, a cam yoke.n'iounted on said shaft, 2L cam roller carried by said yoke, means fortransmitting motion from one of the wheels of the lawn mower to saidvertical shaft, cutter bar support detechebly and adjustebly conn ctedwith the trimmer frame, s

stationery bar sdjustebly attached to said support, an operating leverpivoted to said support and having a bifurcated and cooperating with thecoin yoke and its roller whereby said lever will he oscillated and ocutting blade adjusteb-ly connected to the operating lever.

2. A lawn trimmer comprising a fren'ie consisting of an upright havingat hearing at its upper end, integral bearing bracket," projecting fromthe outer tare of snid up rights intermediate the ends thereof, a footprojecting from the lower end of said upright, said foot having arecess, e lug projecting from the outer face of the upright, e fingerprojecting downwardly from said lug spaced from the upright, anextension projecting upwardly from said lug parallel with the uprightand spaced theretronnssid extension having it bearing, an arm projectingforwardly and upwardly fromsaid linger, the outer end of said erinhaving 5L hole therethrough, an axle mounted in the hole in said arm, awheel journalled on said axle adapted to coact with a wheel oi": a lawnmower, a gear wheel journalled on said axle and connected with the firstnamed wheel,

named leveled gear, 2iv cam yoke on. v rtical shall, :1 rollerjourne-lled within said yoke. t cutter our support adapted to registerwith the recess in. the etoren'ientioned toot, means for holding saidsupport in its different adjusted positions, a stationary cutter barcarried by said support, 11 cutting blade lever pivoted to the cutterher support and having a bifurcated end for coaction with the cum rollerwhereby said lever will he oscillated, e cutter blade cerried by saidlever and means adapted to be ed 'ustebly attached to s lawn mower whereby the trimmer may he detachebly placed in position.

3. In a device of the character stated, a cutter her support consistingof u shank and e, recessed heed having a slot in the recessed portionthereof, a cutter bltl' provided with forwardly extending fingers whichact as the fixed cutting element having a series of perforations and"i'astenin g means adapted lo pass through one of the perhn'ntions andthrough the slot wlierelni' the cutter bar may 4 "isted relative to thesupport.

si- In device of the character stated an socket provided with a slot fortion with a portion of the frame of own mower and having a channel withwhich is adapted to register the finger of it trinnner ir' me, and setscrew threaded through the socket and projecting into the slot, anotherset scre threaded through the socket and projecting, into the channel.

in tostinwny whereof, we have hereunto allixcd our signature-1.

JAlilEti C. JONES.

ADOLF G. KREUTZER.

gear secured, thereto and u'ieshing with the

